Car roof



July 28, 1925.

G. G. GlLPlN CAR ROOF Filed Feb. 2 Sheets-Sheet l Patented July 28, 1925.

Unirse es enrich;

Granen e. GILPINQF River-isms, immers, Assieivoa lTo r. `H.,if/runnercostruttiva', or New knNsiNeroN, rENNsY-LVANIA, n ooNronArioN or PENNSYLVANIA.

npplicationiled'February 2 8, 1,9121. .jslerialla i j To all whom t may concern: j

VBe it known that I, GAR'rfn lGr. GILHN, a citizen of the United States,` residing at Riverside, in thecouiityof Cook and State Vof Illinois, have invented newand useful Improvements ,in Car Roofs,rof which the following is aspeciicaftion. Y

This invention relates lto limprovenients in car roofs ,for freight'cars andinoreparticularly to the type known vas all metal roofs riveted together V)and the rivet holes be so placed 'that they willnot form a ready ingress for water should the rivets become loose. Another object of this invention is to so strengthen the roof sheets at their meeting edges as to allow of the use of light weight material and at the same time simplify the bending or pressing operation in forming the strengthening members.

While the preferred forms of this invenk tion are illustrated upon the accompanying sheets of drawings yet it is to be understood that minor detail changes may be made without departing from the scope thereof.

Fig. 1 is a plan view of a portion of a car roof embodying this invention, with parts broken away.

Fig. 2 isa View in vertical section taken on th-e line 2-2 of Fig. l looking in the direction of the arrows.

Fig. 3 is a view in side elevation of Fig. l, with parts broken away.

Fig. t is a view in section taken on the line fi-4 of Fig. 2.

Fig. 5 is a view in section `taken on the line 5 5 of Fig. 2.

Fig. 6 is a view in section taken on the line 6 6 of Fig. 2.

Fig. 7 is a view in section taken on the line 7 7 of Fig. 2.

In the embodiment of the invention as shown upon the accompanying drawings each roof sheet l extends from side to side of the car with the eaves ends bent down over A thesde `plates 42 and preferably: rigidly secured thereto by Erivets t 3.

','Qne edgeeach roof .sheetijs provided with an Anpstandmg ,flange l which entends continuously from''end to end, andthe otherV edge 1is provided Iwitha struck upfribf formed bylbending or pressing theedge at right angles Ito (the body', of Kthesheet,fforin ing the -top of the ribi at lright anglesthereto, and forming the othergside .spaced apart downwardly v and parallelfto'the Efirstside, as shownin Fig. ,4. -When in position Von .the car frame'fthe'free.spaced :aplartiedge of the rib `of one y"sheet overlaps the standing flange of ,the vadjacent sheet, as

shown in Fig. e. The height lof the above the body O f the' etti-'sheets,remains constant 'i'or aneojual distance, on eachrside of the longitudinal center line vand' then radually decreases until adjacent fthe: side when@ .me rapidlydaeeers en the rib portion of one sheet lies over the body of the adjacent sheet. The sheet originally being of rectangular form and the first bending of the rib portion and the upstanding flange of the opposite edge being in planes at right angle to the longitudinal center of the car, the excess metal formed caused by the reduction in the height of the rib is utilized to strengthen the construction by flanging the free edge of the rib portionA outwardly to rest upon the body of the adjacent sheet and the opstanding flange overlapped thereby is bent outwardly at its upper edge so that it will remain in contact with the side and top portion of the rib, and as it approaches the eaves ends will merge into the plane of the body of its sheet, as shown in Figs. 6 and 7.

The meeting edges of the sheets are provided with a plurality of corresponding rivet holes and as these edges are in a vertical plane when the sheets are secured by the rivets 3, water or rain will not readily seep Y therethrough should the rivet holes become enlarged or the rivets loose.

The running board 6 is preferably supported upon an angle 7 to which it is bolted or otherwise secured and which in turn is attached to the free side of the rib 5 by rivets S which also pass through the angle and edge of the rib in a horizontal plane.

In this construction the plates from which the roof sheets are made are of uniformsize,

the bending or pressing operation is simple and is accomplished Without any Waste of material or shearing of excess metal. sheet is of similar construction, the rib of one overlapping the upstanding flange on the edge of the. adjacent sheet. The struck up ribs and flanges add sufficient strength to the sheets to obviate the necessity of carlines. The more rapidly decreasing height of the rib as it approaches the eaves end of the sheet and the straightening out of the upstanding flange of the adjacent sheet at this point interlocks the sheets together without the necessity of rivets and the constantly increasing flange 9 of the rib edge as it approaches and lays over the eaves end of the adjacent sheet provides a ineans of additional strength to the rib and a means for securing the overlaying end portion to the side sill.

WhatrI claim is:

l. A car roof comprising metal roof sheets extending from eaves to eaves having their 'ends secured to the car frame, each sheet having one margin provided with a struck up rib having spaced apart parallel side Walls decreasing in height from ridge to eaves7 the outer side Wall terminating short of the body of the contiguous sheet at the ridge and flanged out to lay the-reover as the height of the rib decreases7 with the opposite margin provided with an upstanding flange Each increasing in Width until the both portions iiatten out and merge into the plane of the body at the eaves'vvith the increasing flange of' the outer rib Wall of the contiguous sheet laying thereover.

2. A metallic roof sheet of rectangular shape for freight cars adapted to extend from side to side of the car, the margins of one side struck up to form a rib having spaced apart parallel side Walls decreasing in height from ridge to eaves, the outer side Wall terminated short of the plane of the body of the sheet at the ridge With the excess metal flanged outward in a plane lying over the body of the sheet as the height decreases, and the margin of the opposite side having an upstanding flange parallel to and of less height than the said rib Which as the rib decreases in height decreases proportionately With the excess metal bent out in a plane lying on the under side of the top of the rib until both portions of the flange merge into the plane of the body of the sheet at the ends.

GARTH G; GILPIN. 

